Here, we have a latest iPhone app which is designed to secure your private messages and SMS conversations. This app is named as Black SMS, which secures your messages and does not let anyone else to access. What this app actually does that it encrypts your SMS with a password so that you can hide the sensitive information which you have shared via messages. The data is hidden into the black bubbles.
BlackSMS encrypts your messages with a password and then hides the encrypted data inside of a black chat bubble. It is easy to use.
You can chat with your friends confident that no one will read your private messages.
The app uses a highly advanced encryption (Advanced Encryption Standard) so messages are extremely difficult to decrypt without the correct password.
The best part of the app is that it does not indicate that you have locked some of your messages, rather only a black bubble is there, which does tell much. Moreover, it is best in terms of security as the app does not let anyone to access your encrypted SMS, unless he or she entered the correct password to decrypt the conversation.
If interested, you can grab the Black SMS from the App store available for only $0.99.